Topic: New Project: Just Picked up a 1981 CB650 stripped down to the frame

[fordhamr]

Thanks for the add!

Got the 1981 CB650 as a frame, motor and box of parts! Bough from a sheriff that promised it was running good when disassembled. Frame came painted so this weekend I slapped on the front and rear wheel!

I hope to install the motor this week!

Any pointers for installing the motor would be greatly appreciated! Trying to make a check list of things to check and fluid to fill!

Thanks!

I look forward to asking MANY questions along this project as forums can be a HUGE resource and big help!

[chewbacca5000]

It is easiest to lay the motor over the fame and install the engine bolts and go from there.

[mrfish2]

I'm not sure about the 81, but my 82 Nighthawk has a removeable lower part of the frame on the right side that allows for easy removal/installation of the engine. More knowledgeable minds than mine can say for sure about the 81 frame.

[JimJamerino]

On my '80 CB650 the lower right rail of the frame unbolts. Two bolts through the motor mounts, two bolts roughly behind the brake pedal. It allows removal/installation of the engine with the oil filter in place. I found that laying the engine on its side and lowering the frame over it was pretty effective. I bolted up the left side motor mounts, then stood it up, replaced the rail, and bolted in the right side mounts.

Also, I found it easier if the frame was all alone... no wheels, handlebars, fork, or anything else. I was able to lift the back end to put a wheel on, then used the center stand and a jack under the motor to lift the front end to put the front wheel on.

[CBGriz]

On my '80 CB650 the lower right rail of the frame unbolts. Two bolts through the motor mounts, two bolts roughly behind the brake pedal. It allows removal/installation of the engine with the oil filter in place. I found that laying the engine on its side and lowering the frame over it was pretty effective. I bolted up the left side motor mounts, then stood it up, replaced the rail, and bolted in the right side mounts.

Also, I found it easier if the frame was all alone... no wheels, handlebars, fork, or anything else. I was able to lift the back end to put a wheel on, then used the center stand and a jack under the motor to lift the front end to put the front wheel on.

+1 on this method! '82 and '79 CB650 engines out and in this way. Little bit of a pain but I left the wheels on. Still easier than trying to lift it in all my lonesome.


Sent from my iPhone using Tapatalk